If you are in India, you can't underestimate the power of e-commerce. That seems to be the message big consumer companies are getting.Many of these companieshad banned online sales of their products after Flipkart's Big Billion Day sale kicked up controversy over predatory pricing.According to a report in The Economic Times today, companies such as Sony and Panasonic are now cosying up to the e-commerce portals. These companies are "encouraging trade partners to sell their products online", the report said.The reason? Pressure from their headquarters, says the report citing two unnam...